Mickey passed this item along from Yahoo News (Breast cancer genes can come from father)
A deadly gene’s path can hide in a family tree when a woman has few auntsÂ and older sisters, making it appear that her breast cancer struck out ofÂ nowhere when it really came from Dad.
Half of genetic breast cancers are inherited from a woman’s father, notÂ her mother. But unless Dad has female relatives with breast cancer, the faultyÂ gene may have been passed down silently, without causing cancer. (Men can getÂ genetic breast cancer, too, but it’s not common.)
Weitzel said doctors often overlook the genetic risk from the father’s sideÂ of the family.
The large majority of genes are on the 22 pairs of chromosomes that one gets equally from both parents.Â Although breast cancer is expressed almost exclusively in females, it always surprised me when people assumed it was only passed from female to female.Â No known mechanism of inheritance has such a transmission pattern.June 20, 2007